Ceratothripoides claratris (Shumsher) (Thysanoptera: Thripidae) has been identified as the predominant thrips species associated with tomatoes in central Thailand. Apart from Thailand, it has only been reported so far in India, and information on biology of C. claratris is scarce in literature. Both adults and larvae voraciously feed on tomatoes, with leaves as the most susceptible plant parts. Damaged leaves first appear bleached and severe infestations can lead drying out of the leaves. Apart from feeding damage, female thrips additionally damage the plant through oviposition. They embed their eggs inside the plant tissues. The life cycle of C. claratris was studied at 30°C ± 0.3, 12:12h L:D photoperiod on tomato leaf discs. Six different development stages were observed, i.e. the egg, two larval (larva I and II) and pupal (prepupa and pupa) stages and the adult. Ceratothripoides claratris needs 8.78 (± 0.70 SE) days to complete development from egg to adult emergence and the duration of the egg, larva I, larva II, prepupa and pupa was 3 (± 0), 2.01 (± 0.08), 1.35 (± 0.46), 0.7 (± 0.30) and 1.78 (± 0.30) days, respectively. In addition, studies on the reproductive biology and longevity were undertaken. Apart from C. claratris, a few specimens of Thrips palmi Karny (Thysanoptera: Thripidae) were also found on tomatoes in central Thailand.
Species 1: Thysanoptera Thripidae Ceratothripoides claratris
Species 2: Thysanoptera Thripidae Thrips palmi (melon thrips, oriental thrips)
Back to Ten-Minute Papers, Section F. Crop Protection Entomology
Back to Ten-Minute Papers, Section F. Crop Protection Entomology, Subsections Fa and Fb
Back to The 2002 ESA Annual Meeting and Exhibition